crap!

I'm reasonably tech-minded but I thought I'd made this post on my blog for contacts' eyes only. Maybe it's chemobrain, and I don't really mind if the rest of the network sees my posts (there seem to be more of them widely viewable now that I'm looking) - we're all in the same boat. But i don't want to clutter the site with garbage that was meant for another audience.

Can somebody please tell me what I'm doing wrong? Thanks all.